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Full text of "Insecta, ex Sibiria meridionali et Mongolia, in itinere Orjan Olsen 1914 collecta. C. Hymenoptera. 1. Formicidae. D. Hemiptera. 1. Homoptera cicadina."

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ex Sibiria meridional! et Mongolia, 
in itinere 0rjan Olsen 191k collecta. 

C. Hymenoptera. D. Hemiptera, 

1. Formioidae. 1. Homoptera cicadina. 
By Holger Holgersen, Sandnes. 

During the 0rjan Olsen Expedition to Siberia and Mongolia 
1914, Mr. Fritz Jensen, the collector of insects, had his attention 
concentrated especially upon the Ooleoptera, and only occasionally 
secured a few specimens belonging to other orders, so e. g. ants 
and cicadae. These have been stored among the numerous 
Coleoptera from the expedition until recently, when I had the 
occasion to take them out for determination. 

Below I give a list of the species captured, regretting that, 
apart from the locality name, no further details referring to the 
finds are available. 

C. Hymenoptera, 
I. Formicidae. 

Myrmica laevinodis Nyl. Sajan, Sistikem, Mongolia, 1 $. 

Distribution: Europe, Siberia, Mandschukuo, and Japan. 

Tetramorium caespitumL. Abakan-steppe, Siberia, 3 dealated $ $ . 
The mesonotum has longitudinal stripes along its sides, 

the central part being smooth and shining. This rugosity is 

more strongly developed than in specimens from Norway and 

Czecho-Slovakia (in my collection), which have the mesonotum 

smooth nearly all over. 

Distribution: North Africa, Europe, Central Asia, Japan. 

Camponotus ligniperdus Latr. Sajan, Sistikem, Mongolia, 1 
dealated $ . 
The gaster is not so shining as in my Norwegian and 

Central European specimens. The pubescence is distinct, but is 

very slightly developed. 

Distribution: Europe and Siberia. 

Camponotus japonicus Mayr var. aterrima Emery. Abakan- 
steppe, Siberia, 2 $ $ and 1 dealated $ ; Sistikem, Mon- 
golia, 1 dealated ? . 

Insecta 163 

The close pubescence of the gaster of the workers is some- 
what shorter than in a specimen from Krasnoyarsk (in my 


The difference in the microsculpture of this form and of 

the closely allied species ligniperdus Latr. and herculeanus L. 

is rather striking. Not only are head, thorax, and gaster 

distinctly more strongly sculptured in this, but the sculpture 

consists of a net of hexagonal cells, not of irregular lines as 

in the two other species. 

Distribution: Eastern Siberia and China (EMERY 1908). 

Lasius niger L. Abakan-steppe, Siberia, 1 $; Sistikem, Mon- 
golia, 1 $. 
Widely distributed: North Africa, Europe, Siberia, Turkestan, 

China, and Japan. 

Lasius flavus F. Cha-Kul, Mongolia, 1 dealated $ . 

There seems to be no doubt about the identity of this 
single specimen, yet a cover of oil or grease makes the determin- 
ation a little difficult. I have tried to remove it in alcohol 
but without success. 

Distribution: Mediterranean, Europe, Siberia. 

D, Hemiptera. 
I. Homoptera Cicadina. 

Lepyronia coleoptrata L. Abakan-steppe, Siberia, 2 dV, 3 $ $ . 

H. LINDBERG (1923) gives size of Siberian specimens as 
upwards to 8 mm. The Abakan-specimens measure 5 l hl l k. 
In Norway I have found the size varying between 6 and 8 mm, 
the males always being smaller than the females. 
Aphrodes tricinctus Curt. Abakan-steppe, Siberia, 1 cT ; (Sajan, 

Sistikem, Mongolia, 1 $ ). 

The male could be reliably identified by means of its 
characteristic genitalia (det. Frej Ossiannilsson, Stockholm). The 
female may possibly belong to this species. 

Distribution: Oshanin (Katalog der pal. Hem.) gives only 
Central and Southern Europe, Algeria, and Caucasia.